Mobilize hoists and get low maintenance and trouble free operation through a wide range of beams with this 2-PT 2 Ton Plain Trolley for 3-1/4" to 8" Wide Beams (252020) from Jet. For use with wide-flange H-beams, standard I-beams or curved track, the multiple spacer washers make beam flange width adjustment quick and easy. The rugged steel side plates feature built-in bumper guards and it has double sealed ball bearings.